Mathematically modeling the mechanical constants of thoracolumbar fascia under compression, in vivo

The thoracolumbar fascia (TLF) is a complex structure made of many interconnecting aponeurosis and muscle fascia. It plays a role in posture, stabilizing the lumbosacral spine, load transfer, and respiration. Its complex structure and connections have mostly been observed through cadaveric studies while its mechanical properties have been addressed in only a few studies. Recently, new advances in ultrasound imaging have made it possible to move towards measuring tissue strain. Since this is an in vivo method, mechanical data of tissues in their natural environment allows a more accurate representation of tissue strain. However, many different methods of analyzing ultrasound data have been proposed. In this study, the posterior layer of the TLF (pTLF) is studied under compression using ultrasound imaging in order to determine its mechanical properties. Using B mode imaging, deformation is measured in skin, fat, TLF, and the underlying erector spinae muscles using a tracking algorithm developed in Matlab. Data analysis is then used in a nonlinear mathematical model and a finite element model to quantitatively evaluate mechanical constants. Although TLF mechanical constants are not available for comparison, estimates of the modulus of elasticity of skin, superficial fascia, pTLF and the erector spinae muscle group are within an acceptable physiological range.

Name thesis:degree_name

Master of Science in Biomedical Engineering - (M.S.)

Discipline thesis:degree_discipline

Biomedical Engineering

Year

2014

Author dc:creator

• Patel, Vrajeshri

Contributors dc:contributor

• Hans Raj Chaudhry
• Thomas W. Findley
• Max Roman

• Thoracolumbar fascia
• Mechanical properties
• Biomedical Engineering and Bioengineering

Repository record dc:identifier

https://digitalcommons.njit.edu/theses/191

OAI identifier oai:identifier

oai:digitalcommons.njit.edu:theses-1190